Attached are:
1) Patches that i'm using (on top of 366feb3d9dde2f4bb49a243af882da41cbcf8e40). One improves mingw-w64 compatibility, the other fixes up old code that went stale. The third patch is already in HEAD.
2) Logs of the testsuite. I did two runs - with and without USE_PASSTHROUGH_DIRECT. "With" turned out to pass more tests.